Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC8AT callsign genealogy
Currently held by O BRIEN, JOHN W
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by AC8AT's current licensee, walking backwards.
- O Brien, John WOHgranted 2001-06-05cancelled 2008-03-11
Successor callsigns
Callsigns held now by people who previously held AC8AT.
No current licensee on record previously held this callsign.